Winding apparatus



Sept. 23, 1941. I c. w. MAYER 2,256,746

WINDING APPARATUS v Filed Aug. 2, 1940 2 Sheets-Sheet 1 Sept. 23, 1941.

C. W. MAYER WINDING APPARATUS Filed Aug. 2, 1940 2 Sheets-Sheet 2 L u m 28 cz ik \L 1L 1 16 5 FIG 2 if :TW 2 w i7 4 4 mk :\W 17 g I133 6 4 INVENTOR CHAR). s M MAYER 6 4 TTwNE i Patented Sept. 23, 1941 UNITED STATES PATENT OFFICE WINDING APPARATUS Charles W. Mayer, Rochester, N. Y.

Application August 2, 1940, Serial No. 349,736

(Cl. sac- 55) 2 Claims.

This invention relates to winding machines and more particularly to a winding mechanism for paper. In paper making and continuous paper web treating machines, such as coating machines, employed in coating carbon or wax paper, it is essential that the rewind shaft be rotated at a speed that will produce a uniform winding tension in order to prevent breakage of the paper or loose and telescoping turns in the finished roll. In addition to this it is essential that the winding shaft or reeling center be so mounted in its journal support that it can be readily inserted or withdrawn therefrom to facilitate the removal of the completed roll and the mounting of another shaft for a new roll with an ease and rapidit that 'will not interfere with the continuous operation of the machine or cause the loss of any great amount of paper during the change.

My present invention has for its principal I bject to provide a novel driving and winding mechanism which will effect a uniform winding tension on the paper web in its travel to the rewind shaft.

A further object of this invention is to provide the winding mechanism with a novel journal support for the rewind shaft which cooperates with the winding mechanism to provide a uniform winding tension on the windup of the paper web and provides for a quick and easy mounting and removal of the rewind shaft.

These and other objectsand attendant advantages of the invention will become more readily apparent from the detailed description thereof which follows, reference being had to the accompanying drawings in which Figure 1 is a side elevation of the frame and up of the sides I and 2 which are supported by the base 3. Journal bearings 4, 4 provided on each side of the frame support the feeding rolls I and 8, which feed the paper web P from the prficlglssing apparatus (not shown) to the finished to The winding mechanism is driven by'the belt 'I which rotates the pulley I and with it the pulley 9 and gear II. The latter meshes with the gear II for the rotation of the sprocket l2. Each of the rolls I and O is adapted to be rotated by a sprocket gear l3, and the sprocket chain l4, which is driven by the sprocket i2, is arranged and held in mesh with the sprocket gears ll so as to positively rotate the roll I in a clockwise direction and the roll 8 in a counterclockwise direction. In this way the paper web P is consecutively drawn over the rolls I and 6 in its travel to the finished roll R.

The rewind shaft II is journaled in two antifriction bearings ii, I. of substantially identical construction. Each of these bearings comprises a box ll which is bolted to the side ofthe frame and carries in the center thereof a relatively large supporting roller II with trunnions I! at each end mounted to rotate in ball bearings 20 provided in the side walls of the box. Above and forward of this supporting roller and toward the feed roll 4, is a thrust roller II which is similarly mounted to rotate in the side walls of the box. The ends of the rewind shaft ll are'adapted to extend thru openings in the side walls of the boxes II to permit the shaft to be freely supdriving mechanism of a winding machine em- 'of the journal bearings for the rewind shaft, the

section being taken on the line H of Figure 2.

Figure 4 is a vertical sectional view of the journal bearing taken on the line 4-4 in Figure 3.

Figure 5 is a vertical sectional view of a portion of the drive for the rewind shaft, the section being taken on the line 5-5 in Figure 2.

The present application is a continuation in part of application Serial No. 91,930 filed July 22, 1936.

In the machine illustrated in the accompanying drawings which embodies my invention, the

ported on the rollers I8 and II.

The box is normally closed at the top with a cover 22 in order, to confine the shaft within the box and hold it locked therein without, however, any bearing contact with the cover. The cover is hinged to the box at 23 and is fastened in place by a swinging bolt 24 and nut 25 with which the cover may be quickly held in place over the box or released thereon so that it can be thrown back to open the hearing when it is desired to insert or remove the rewind shaft ii.

The relative diameters of the main supporting roller is and thrust roller 2| taken with the diameter of the rewind shaft are such that the latter, rotating in a clockwise direction in Figure 3, will have a line of tangency lying just over the crest of the supporting roller and its axis is just forwardly of the axis of the latter. Thus, as the rewind shaft II is driven in this direction, it will tend to climb against the thrust roller Ii in a direction with the line connecting winding mechanism is mounted in a frame made the axis of the roller 2| with the axis of the rewind shaft. Therefore, whilethe large supporting roller I9 is supporting practically all of the weight, the smaller thrust roller provides sufficient antifriction support to cause the rewind shaft I! to freely rotate between them and at the same time have the roller 2| take the lateral thrust of the shaft I! produced by the tension of the paper web as it is drawn by the force of the winding operation. Consequently the resultant of the mechanical and gravitational forces acting on the shaft lies between the rollers i8 and 2| so that the two rollers provide an antifriction bearing of minimum resistance for the support of the rewind shaft. The rewind shaft l journaled in this manner and carrying a ton of paper may thus be rotated with but a sligh pressure of the finger.

The paper web is wound. on a hollow core in the pulley 29 'which is driven by a suitable belt a 99 from the pulley 9. A belt tightening roller 40 contacts the belt 30 to. increase or decrease the driving tension of the belt. Either one or both of the pulleys 9 and 29 may have a loosely mounted friction sleeve 3| mad up of canvas or other suitable material interposed between it and the belt 90 in order to provide a frictional drive that provides for the rotation of the rewind shaft with the proper winding tension on the paper web as will hereinafter be described.

The rewind shaft has a squared end 32 adjacent to the drive shaft 28, and a clutch sleeve 95 suitably splined on the drive shaft and provided with a correspondingly squared pocket, is adapted to be moved on the drive shaft by means of the clutch lever 34 to connect or disconnect the rewind shaft and the drive'shaft.

From the foregoing it will be apparent that in the operation of the winding apparatus the rolls 5 and 6 are simultaneously and uniformly rotated by the chain drive H on the rotation of the pulley 9. This uniform rotation of the rolls causes the paper web P to be drawn over these rolls at a uniform linear speed. The rewind shaft I5 is rotatably supported by rollers to offer but a minimum amount of resistance to its rotation so 9| and thus eliminates direct frictional contact between the belt and the pulleys in order to allow pulley 29 and with it the rewind shaft and roll R carried thereby to rotate at the increased speed built up by the momentum of the rewind shaft and itsroll R. This increased speed is retarded by the uniform linear movement of the web as it travels over th rolls 5 and 6 to the roll and a uniform winding tension is thus produced in the paper web on its wind up on the roll R.

In practice the use of this rewind mechanism has eliminated most of the breakage of paper on the wind up thereof. It has also produced smooth and even rolls of paper as no loose turns can occur in the rolls because the rewind shaft nevertheless causes the rewind shaft to instantaneously rotate with the positively driven feed rolls so as to immediately tension the paper web between the feed roller 6 and the rewind shaft IS. The uniform peripheral speed of the rolls 5 and 9 furthermore combines with an increased peripheral speed of the roll R caused by its momentum and permitted by its frictional drive and sensitive antifriction support to provide a constant uniform winding tension on the paper web between th roll R and the rolls 5 and 6.

I claim:

1. In a winding apparatus for web material,

the combination of a driving member, a feed roll adapted to have the web material travel thereover, a rewind shaft for receiving the web material from said feed roll, a pair of antifriction bearings for supporting said rewind shaft, each material consecutively travel thereover, positive driving means connecting said feed rolls with said driving member for positive and simultaneous rotation of said rolls in opposite directions, a rewind shaft for receiving the web material from one of said feed rolls, a .pair of antifriction bearings for supporting said rewind shaft horizontally spaced from said feed rolls; a clutch member rotatably supported in line with said rewind shaft, frictional driving means between said driving member and said clutch member, and means for engaging said clutch member with said rewind shaft to permit the rotation of said rewind shaft by said frictional driving means with increased rotative movement over that of the feed rolls. 

